On Tue, Oct 11, 2011 at 07:43:15PM +0530, Thomas Abraham wrote: > Add a new Exynos4 compatible device tree enabled board file. Boards based on > the Exynos4 family of SoC's can use this as the machine/board file. When using > this machine fike, a corresponding device tree blob which describes the board's > properties should be supplied at boot time to the kernel. > > Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx> Acked-by: Grant Likely <grant.likely@xxxxxxxxxxxx> > --- > .../devicetree/bindings/arm/insignal-boards.txt | 8 ++ > .../devicetree/bindings/arm/samsung-boards.txt | 8 ++ > arch/arm/mach-exynos4/Kconfig | 14 +++ > arch/arm/mach-exynos4/Makefile | 2 + > arch/arm/mach-exynos4/mach-exynos4-dt.c | 85 ++++++++++++++++++++ > 5 files changed, 117 insertions(+), 0 deletions(-) > create mode 100644 Documentation/devicetree/bindings/arm/insignal-boards.txt > create mode 100644 Documentation/devicetree/bindings/arm/samsung-boards.txt > create mode 100644 arch/arm/mach-exynos4/mach-exynos4-dt.c > > diff --git a/Documentation/devicetree/bindings/arm/insignal-boards.txt b/Documentation/devicetree/bindings/arm/insignal-boards.txt > new file mode 100644 > index 0000000..524c3dc > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/insignal-boards.txt > @@ -0,0 +1,8 @@ > +* Insignal's Exynos4210 based Origen evaluation board > + > +Origen low-cost evaluation board is based on Samsung's Exynos4210 SoC. > + > +Required root node properties: > + - compatible = should be one or more of the following. > + (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board. > + (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC. > diff --git a/Documentation/devicetree/bindings/arm/samsung-boards.txt b/Documentation/devicetree/bindings/arm/samsung-boards.txt > new file mode 100644 > index 0000000..0bf68be > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/samsung-boards.txt > @@ -0,0 +1,8 @@ > +* Samsung's Exynos4210 based SMDKV310 evaluation board > + > +SMDKV310 evaluation board is based on Samsung's Exynos4210 SoC. > + > +Required root node properties: > + - compatible = should be one or more of the following. > + (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board. > + (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC. > diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig > index 0c5888a..39dc135 100644 > --- a/arch/arm/mach-exynos4/Kconfig > +++ b/arch/arm/mach-exynos4/Kconfig > @@ -304,6 +304,20 @@ config MACH_SMDK4412 > help > Machine support for Samsung SMDK4412 > > +comment "Flattened Device Tree based board for Exynos4 based SoC" > + > +config MACH_EXYNOS4_DT > + bool "Samsung Exynos4 Machine using device tree" > + select CPU_EXYNOS4210 > + select USE_OF > + select ARM_AMBA > + select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD > + help > + Machine support for Samsung Exynos4 machine with device tree enabled. > + Select this if a fdt blob is available for the Exynos4 SoC based board. > + Note: This is under development and not all peripherals can be supported > + with this machine file. > + > endmenu > > comment "Configuration for HSMMC bus width" > diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile > index 8066538..4e302cb 100644 > --- a/arch/arm/mach-exynos4/Makefile > +++ b/arch/arm/mach-exynos4/Makefile > @@ -37,6 +37,8 @@ obj-$(CONFIG_MACH_ORIGEN) += mach-origen.o > obj-$(CONFIG_MACH_SMDK4212) += mach-smdk4x12.o > obj-$(CONFIG_MACH_SMDK4412) += mach-smdk4x12.o > > +obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o > + > # device support > > obj-y += dev-audio.o > diff --git a/arch/arm/mach-exynos4/mach-exynos4-dt.c b/arch/arm/mach-exynos4/mach-exynos4-dt.c > new file mode 100644 > index 0000000..85fa027 > --- /dev/null > +++ b/arch/arm/mach-exynos4/mach-exynos4-dt.c > @@ -0,0 +1,85 @@ > +/* > + * Samsung's Exynos4210 flattened device tree enabled machine > + * > + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. > + * http://www.samsung.com > + * Copyright (c) 2010-2011 Linaro Ltd. > + * www.linaro.org > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > +*/ > + > +#include <linux/of_platform.h> > +#include <linux/serial_core.h> > + > +#include <asm/mach/arch.h> > +#include <mach/map.h> > + > +#include <plat/cpu.h> > +#include <plat/regs-serial.h> > +#include <plat/exynos4.h> > + > +/* > + * The following lookup table is used to override device names when devices > + * are registered from device tree. This is temporarily added to enable > + * device tree support addition for the Exynos4 architecture. > + * > + * For drivers that require platform data to be provided from the machine > + * file, a platform data pointer can also be supplied along with the > + * devices names. Usually, the platform data elements that cannot be parsed > + * from the device tree by the drivers (example: function pointers) are > + * supplied. But it should be noted that this is a temporary mechanism and > + * at some point, the drivers should be capable of parsing all the platform > + * data from the device tree. > + */ > +static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = { > + OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART0, > + "exynos4210-uart.0", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART1, > + "exynos4210-uart.1", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART2, > + "exynos4210-uart.2", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART3, > + "exynos4210-uart.3", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0), > + "exynos4-sdhci.0", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1), > + "exynos4-sdhci.1", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2), > + "exynos4-sdhci.2", NULL), > + OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3), > + "exynos4-sdhci.3", NULL), > + OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0), > + "s3c2440-i2c.0", NULL), > + OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL), > + OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL), > + {}, > +}; > + > +static void __init exynos4210_dt_map_io(void) > +{ > + s5p_init_io(NULL, 0, S5P_VA_CHIPID); > + s3c24xx_init_clocks(24000000); > +} > + > +static void __init exynos4210_dt_machine_init(void) > +{ > + of_platform_populate(NULL, of_default_bus_match_table, > + exynos4210_auxdata_lookup, NULL); > +} > + > +static char const *exynos4210_dt_compat[] __initdata = { > + "samsung,exynos4210", > + NULL > +}; > + > +DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)") > + /* Maintainer: Thomas Abraham <thomas.abraham@xxxxxxxxxx> */ > + .init_irq = exynos4_init_irq, > + .map_io = exynos4210_dt_map_io, > + .init_machine = exynos4210_dt_machine_init, > + .timer = &exynos4_timer, > + .dt_compat = exynos4210_dt_compat, > +MACHINE_END > -- > 1.6.6.rc2 > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
 |